Last week, four commercial astronauts boarded a SpaceX capsule for a pioneering spaceflight that was years in the making. And though the astronauts landed safely Sunday off the coast of Florida, the ...

The Polaris Dawn mission, an ambitious five-day journey to the upper reaches of Earth's orbit, will take the crew higher than an human has traveled in more than 50 years. After descending to a ...

Banner image: CU Boulder aerospace engineers Torin Clark, left, and Allie Hayman, right, sit with the crew of Polaris Dawn during an event on campus in 2022. (Credit: Casey Cass/CU Boulder) Editor's ...

A number of Polaris Dawn experiments are gathering data for NASA's Human Research Program. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Each of the four ...

When the Dragon spacecraft launched Tuesday atop a Falcon 9 rocket, the vehicle carried the private astronauts farther into space than humans have reached in more than half a century. Two days after ...